KHTTP_BODY(3) Library Functions Manual KHTTP_BODY(3)

khttp_body, khttp_body_compress
close the HTTP header sequence for kcgi

library “libkcgi”

#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
enum kcgi_err
khttp_body(struct kreq *req);
enum kcgi_err
khttp_body_compress(struct kreq *req, int compress);

The khttp_body() and khttp_body_compress() functions terminate the zero or more khttp_head(3) calls for a kcgi(3) context req. After these functions, invoking khttp_head(3) or invoking khttp_body() or khttp_body_compress() again results in undefined behaviour.
The khttp_body() function checks whether compression should be enabled by examining request headers. If applicable, it emits the appropriate content encoding header and enables compressed output for subsequent khttp_write(3) calls.
The khttp_body_compress() function accepts the compress argument which, if zero, disables compressed output for subsequent khttp_write(3) calls. This is appropriate for caller-managed compression, such as when sending pre-compressed files. If non-zero, compressed output is enabled. In either case, content encoding headers must be managed by the caller.

The khttp_body() and khttp_body_compress() functions return an enum kcgi_err indicating the error state.
 
 
Success (not an error).
 
 
Internal memory allocation failure.
 
 
Internal system error writing to the output stream.
 
 
The output connection has been terminated. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
 
 
Returned by khttp_body_compress() if compression was requested but is not provided by the operating system.

Write out an HTTP header sequence and text content with automatic compression detection. Assume that r is a pointer to a struct kreq successfully initialised by khttp_parse(3).
khttp_head(r, kresps[KRESP_STATUS], 
  "%s", khttps[KHTTP_200]); 
khttp_head(r, kresps[KRESP_CONTENT_TYPE], 
  "%s", kmimetypes[KMIME_TEXT_PLAIN]); 
khttp_body(r); 
khttp_puts(r, "Hello, world!\n");
To explicitly disable compression:
khttp_head(r, kresps[KRESP_STATUS], 
  "%s", khttps[KHTTP_200]); 
khttp_head(r, kresps[KRESP_CONTENT_TYPE], 
  "%s", kmimetypes[KMIME_TEXT_PLAIN]); 
khttp_body_compress(r, 0); 
khttp_puts(r, "Hello, world!\n");
To disable compression, but emit a compressed file:
khttp_head(r, kresps[KRESP_STATUS], 
  "%s", khttps[KHTTP_200]); 
khttp_head(r, kresps[KRESP_CONTENT_TYPE], 
  "%s", kmimetypes[KMIME_TEXT_PLAIN]); 
khttp_head(r, kresps[KRESP_CONTENT_ENCODING], 
  "%s", "gzip"); 
khttp_body_compress(r, 0); 
khttp_template(r, NULL, "compressed.txt.gz");

kcgi(3), khttp_head(3), zlib(3)

The khttp_body() function was written by Kristaps Dzonsons <kristaps@bsd.lv>.
September 28, 2018 OpenBSD 6.4